TSM1011 STMicroelectronics, TSM1011 Datasheet - Page 7

• Manufacturer Part Number: TSM1011
• Description: Constant Voltage and Constant Current Controller
• Manufacturer: STMicroelectronics

Voltage clamp
8
The schematic in
low-cost power supply for the TSM1011 (with no
additional windings).
Please pay attention to the fact that in the
particular case presented here, this low-cost
power supply can reach voltages as high as twice
the voltage of the regulated line.
Since the Absolute Maximum Rating of the
TSM1011 supply voltage is 28V. In the aim to
protect he TSM1011 against such how voltage
values a internal zener clamp is integrated.
VOLTAGE CLAMP
R
limit
Figure 5
=
I
vz
shows how to realize a
V
cc
–
V
z
Fig. 5: Clamp voltage
Vcc
TSM1011
Rlimit
Ivz
Vcc
Vz
28V
TSM1011
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